Text this: Rod-structure classification of gravitational instantons with U(1)×U(1) isometry

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 |__  //   |  ___||  /_   _//   / _ \\   / ____|| 
   / //    | ||__    `-| |,-   / //\ \\ / //---`' 
  / //__   | ||__      | ||   |  ___  ||\ \\___   
 /_____||  |_____||    |_||   |_||  |_|| \_____|| 
 `-----`   `-----`     `-`'   `-`   `-`   `----`